Koffman, E. B. (2002). Problem solving with java (ada CD). Addison-Wesley.
Lua i Stíl Chicago (17ú heag.)Koffman, Elliot B. Problem Solving with Java (ada CD). Addison-Wesley, 2002.
Lua MLA (8ú heag.)Koffman, Elliot B. Problem Solving with Java (ada CD). Addison-Wesley, 2002.
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